291220215

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{991}}^1$

素因数の和:1160

約数の個数: 64

約数和(自身を含む): 551964672

約数和(自身を除く): 260744457

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 137, 143, 165, 195, 411, 429, 685, 715, 991, 1507, 1781, 2055, 2145, 2973, 4521, 4955, 5343, 7535, 8905, 10901, 12883, 14865, 19591, 22605, 26715, 32703, 38649, 54505, 58773, 64415, 97955, 135767, 141713, 163515, 193245, 293865, 407301, 425139, 678835, 708565, 1493437, 1764971, 2036505, 2125695, 4480311, 5294913, 7467185, 8824855, 19414681, 22401555, 26474565, 58244043, 97073405, 291220215]

約数ペア:

[(1, 291220215), (3, 97073405), (5, 58244043), (11, 26474565), (13, 22401555), (15, 19414681), (33, 8824855), (39, 7467185), (55, 5294913), (65, 4480311), (137, 2125695), (143, 2036505), (165, 1764971), (195, 1493437), (411, 708565), (429, 678835), (685, 425139), (715, 407301), (991, 293865), (1507, 193245), (1781, 163515), (2055, 141713), (2145, 135767), (2973, 97955), (4521, 64415), (4955, 58773), (5343, 54505), (7535, 38649), (8905, 32703), (10901, 26715), (12883, 22605), (14865, 19591)]